Portion of a toothbrush



FIG. 1 is a perspective view of a portion of a toothbrush according tomy new design;

FIG. 2 is a right side view, the left side being a mirror image thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a close up view of the portion of the toothbrush head.

FIGS. 1-7 show portions of the design in phantom lines. The portionsshown in phantom lines are for environmental purposes and form no partof the claimed design. For purposes of illustration, FIG. 7 shows thedesign with the phantom line portions removed.

The ornamental design for a portion of a toothbrush, as shown anddescribed.